Flour-bolting brush.



No. 741,370. PATENTED 001". 13, 1903.

J. G. PETERSON.

. FLOUR BOLTING- BRUSH. APPLIOATION FILED Jmmzm 19 02v N0 MODEL.

L L-QJ U ITED STATE Patented October 13, 1903.

PATnr trier...

JOHN G. PETERSON, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALlLIS OI-IALMERS COMPANY, A CORPORATION OF NEW JERSEY.

FLOUR-BOLTING BRUSH.

SPECIFICATION forming part of Letters Patent No. 741,370, dated October 13, 1903..

Application filed June 26, 1902. Serial No. 113,205. (No model.)

To all whom it may concern.-

Be it known that I,JOHN G. PETERSON, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Via consin, have invented new and useful Improvements in Flour Belting Brushes, of which the following is a specification.-

My invention relates to improvements in flour-bolting brushes, and pertains to that class which are used in connection with flourbolting machines to prevent the meshes of the bolting-cloth from becoming; obstructed with flour.

The construction of my invention is explained by reference to the accompanying drawings, in which Figure 1 represents a top View. Fig. 2 is a vertical section. Fig. 3 is a side view. Fig. 4: is a bottom view. Fig. 5 shows a modified form of brush having a plurality of pivotal supports, and Fig. 6 is a detail view showing the manner of securing a tuft of brushes in the supporting-block.

Like parts are identified by the same reference-letters throughout the several views.

It will be understood that these brushes when in use are supported with their backs downward upon a wire screen, while the upper ends of the tufts of bristles are brought in close proximity to the lower surface of the bolting-cloth. The back of the brush is provided with one or downwardly projecting pivotal supports which drop into the meshes of the wire screen and cause the brush to rise and fall as it moves over the surface of the screen, whereby the tufts of bristles are thrown into and out of contact with the bolting-cloth. I-Ieretofore that part of the brush which supports the bristles has been formed integrally with the downwardly projecting pivotal. supports. By my present improvements the tufts of bristles A are supported from a separate piece, which is referred to as the block or disk I while the downwardlyprojecting pivotal supports 0 are formed in connection with the sheet-metal shell or inclosure 1). The inclosure D is secured to the disk B by the vertical flange E and the inwardly-projecting annular flange F. When the sheet-metal shell is made and the tuft of bristles has been secured to the block B in the ordinary way, such block is placed in the shell, when the upper edge of the flange E is bent inwardly over the upper edge of said block, whereby the block is permanently secured in place therein.

While the tufts of bristles maybe inserted at uniform distances apart over the surface of the block, I preferably arrange them in pairs, with open spaces between them and at the center of the block, as indicated in Fig. 1, as by so doing the bristles of the respective tufts, owing to the fact that the momentum of the brush as it oscillates is concentrated upon a single point of the brush, will more readily penetrate the meshes of the boltingcloth than they would were such tufts distributed uniformly over the entire surface of the block.

\Vhile I have shown a single central pivotal bearing in Fig. 4, two or more such bearings may, if desired, be employed, as shown in Fig. 5.

Owing to the fact that the block 13 is usually made of wood and that it is liable to be split or broken or worn away by use, it be comes necessary to strengthen and protect the same. This object is accomplished by the sheet metal shell or inclosure D, which entirely covers the lower surface, the marginal edge, and a portion of the upper surface, whereby said block is shielded from contact with the sieve-frame and other brushes and the'liability of its becoming split, worn, or warped out of shape is avoided, while the con- Vex projections formed on the lower surface serve as pivotal supports for the brush when in use.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A flOUr-bOltlngblHsh, comprising a block provided witha plurality of tufts of bristles, and a metallic shell inclosing said block upon its lower surface, its vertical sides, and the marginal edge of its upper surface, substan- In testimony whereof I affix my signature in the presence of two Witnesses.

JOHN G. PETERSON.

Witnesses:

J AS. B. Enwm; O. L. RoEsoH. 

